Re: Fresson question
Sandy, thanks -- I should have figured that out. What threw me off is that I have a transparency densitometer, and when I needed reflective readings did them through the paper & subtracted the paper density. I suppose that's not perfectly accurate (ha ha), but for the purpose it worked -- after all, the error, whatever it was, was a constant ! (And I only had room for one densitometer -- in a closet with 3 other "appliances.") So anyway, I forgot about "reflective" as a different category... (The rule being, if you don't use knowledge, the efficient mind removes it to make room for something else.) best, Judy On Sun, 13 Jan 2008, Sandy King wrote: Reflective D-Max is just a term that describes the darkness of a print as measured with a densitometer, so it is expressed as a log value. Pt./Pd., kallitype and vandyke prints on art papers generally have a maximum Dmax of about log 1.45 - 1.55. Silver prints on glossy papers can have a Dmax of up to log 2.2 or even higher. A direct carbon print like a Fresson print will have a maximum Dmax of below log 1.4. Carbon transfer prints can have a reflective Dmax as high as silver papers, though this depends on many working conditions.
|